baber/WOPTO huggingface dataset:
Patent GB-356308-A (GB)
Title: Improvements in or relating to the manufacture of cellulose ethers
IPC: C08B11/20
Filed: 1930-06-11
Abstract: Cellulose ethers of low viscosity are obtained by kiering higher viscosity ethers with dilute acids in the presence of a non-acid water-soluble salt in sufficient quantity to give a highly concentrated solution at the highest temperature used.  It is preferred to use salts, such as sodium citrate, sodium chloride, or potassium chloride, which have approximately the same solubility at high and at ordinary temperatures or which are more soluble in cold than in hot water.  The acid used in the kiering process may be produced in situ by the hydrolysis of an alkyl or aralkyl halide such as is present in the crude etherification product.  In examples (1) benzyl cellulose is heated under pressure with a dilute solution of oxalic acid in the presence of sodium citrate; (2) ethyl cellulose is heated under pressure with dilute hydrochloric acid and sodium chloride; (3) partially purified benzyl cellulose still containing benzyl chloride is heated under pressure with water and sodium chloride. Specifications 333,902, [Class 2 (ii), Cellulose &c.], 342,391, and 352,999 are referred to.
Patent GB-733490-A (GB)
Title: Spring assembly and inner spring construction
IPC: A47C23/043
Filed: 1952-07-16
Abstract: 733,490. Spring surfaces. HOLLO, G. July 16, 1952 [July 24, 1951], No. 18017/52. Class 52 (4). A plurality of wire spirals, alternately of opposite hand, are simultaneously bent to form rows of mattress or cushion springs A<SP>1</SP>, B<SP>1</SP>, C<SP>1</SP>, Fig. 5, the wire being stressed so that the axes of adjoining coils are biased in opposite directions out of parallelism to produce a firmer connection between the springs and to reduce noise. The spirals may be intertwined along the whole or a part of their lengths, or connected by rings or spirals, and may be of single or doubled wire and of different diameters and pitch, Fig. 12. Fabric may be interposed between the springs to enhance noise reduction. An obtuse angle a in the parts 30, Fig. 15, connecting the springs may be imparted during bending to produce the bias, or with intertwined coils, some turns may be above and others below the corresponding turns of the coils with which they are intertwined.
Patent GB-389336-A (GB)
Title: Process and apparatus for the manufacture of cellulose products
IPC: D01F2/04
Filed: 1932-06-25
Abstract: <PICT:0389336/IV/1> <PICT:0389336/IV/2> <PICT:0389336/IV/3> Continuous structures such as artificial filaments, horsehair, and films, are obtained from solutions, particularly cellulose solutions, in such manner that the solution issuing from comparatively wide openings traverses in substantially straight path first an air space and then a body of strongly acting setting liquid and the filament or film is stretched before its entry into the setting liquid by the pull of the coagulated product.  The stretch may be applied by rollers or similar devices arranged at some distance from the plastic part of the filaments and even outside the setting bath, the hardened part of the filaments transmitting the stretching force to the plastic part.  As shown in Fig. 1, cuprammonium cellulose solution is extruded through a nozzle 2 and after passing some distance through the air enters a precipitating liquid contained in trough 5.  The thread rapidly coagulates in the strongly acting liquid and is deviated from the vertical round a rod 4.  After traversing the bath in a horizontal direction it is led out of the bath and cross-wound on a reel. The drawing speed of the reel imparts a tension which extends back to the nozzle and stretches the plastic part of the filament.  As shown in Fig. 2, a film is extruded from a slit in the pouring-device 7 and traverses an air path and a path through the strongly acting setting bath 9 in a straight line.  It then passes over rollers 10 . . 12 and is led to a winding device.  As shown in Fig. 4, spinning solution from a pipe 14 passes to a number of spinning-heads 15 each of which is provided with several nozzles 20. The filaments from each spinning-head are passed through the air and a sufficient depth of setting liquid for coagulation to take place so that when they are brought together to form a thread on the deviating rod 16 undesirable mutual adhesion is prevented. Caustic soda solution may be used as the strongly acting setting liquid.
Patent GB-908401-A (GB)
Title: Improvements in or relating to strap connectors
IPC: A44B11/25
Filed: 1960-05-23
Abstract: 908,401. Latch fastenings. AUTOFLUG GERHARD SEDLMAYR G.m.b.H. May 23, 1960 [May 23, 1959], No. 18130/60. Addition to 847,147. Class 44. The movable retaining plate of the strap connector of the parent Specification is associated with a control disc which is depressible from a lug-engaging position to a lug-releasing position and is also rotatable into three switch positions, namely, a position corresponding to a " locked " position in which the disc cannot be depressed in a releasing direction and the movable retaining plate cannot be moved, a position corresponding to an " inserting " position in which the plate can be rocked to permit of the individual engaging of the lugs concerned, and a position corresponding to a " releasing " position in which the disc, can be depressed so as to move the plate to a position in which all the engaged lugs are freed. The connector shown comprises a housing 1 mounting a depressible unit consisting of a control disc 12, a knob 2 and a retaining plate 5 and which is spring-loaded upwardly by a spring 71 applied between the housing base 10 and each of four lug-engaging plungers 4 carried by the plate 5. The connection between the plate 5 and the knob 2 comprises the interengagement of a member 13 carried by the knob and a slot in the plate which is so arranged that when the disc is in the " inserting " position the plate may be moved downwardly and out of engagement with the member 13 in order to push the lugs into engagement with the plungers. In its " locked " position the disc, hub and plate are immovably fixed by the engagement of a spring-pressed plunger 8 in the lower of two interconnected channels 7 formed in the hub. Rotation through 90 degrees brings the disc into its " release " position such that the unit may be depressed, the plunger 8 then engaging the upper channel 7. Subsequent rotation through 45 degrees of the disc moves the unit to the " inserting " position. In order to prevent inadvertent lug release a safety device in the form of a slot is formed between the housing 1 and the disc 12 to accommodate a spacing member 27. In a modified connector axial movement of the hub is controlled by the engagement of a resilient bar 19, Fig. 8, carried by the disc with suitable grooves formed at the upper end of the hub which is of square crosssection. In a further safety device a latch is pivotally mounted on the connector housing for engagement with a notch in the disc.
Patent GB-1535230-A (GB)
Title: Hydraulic presses
IPC: B30B1/00
Filed: 1976-05-04
Abstract: 1535230 Compression moulding L BETTONICA 4 May 1976 [13 May 1975] 18137/76 Heading B5A An hydraulic press for the production of ceramic tiles, dishes &c., comprises stationary heads 1, 2 joined by parallel columns 4 on which a crosshead 3 is slidable and driven by hydraulic jacks 40, 40<SP>1</SP>. The crosshead is attached to a punch 74 opposite a mould 69 attached to the head 2. The punch and mould co-operate with a cavity in a die plate 73 movable towards and away from the head 2 by piston and cylinder means 50-52. A flexible bag 12 supplied with pressure liquid applies additional pressure. Initially the plate 73 is moved by the means 50-52 towards the head 2 bringing the mould into the cavity; the crosshead is lowered by a jack 21, 26 to bring the punch into the cavity and, during such movement, a toothed plate 9 resiliently attached to the crosshead is separated from a toothed plate 30 retained on the head 1. The plate 30 is then moved laterally by a jack 32 whereby it is kept apart from the plate 9. The cavity is filled with material compressed firstly by operating the jacks 40, 41 and finally by supplying liquid to the bag. The assembly comprising the plate 73, punch and mould may be mounted on a plate swung away from between the head 2 and crosshead. The press may include two pressure assemblies whereby one may be positioned between a head and the crosshead whilst the other is swung clear. The die plate 73 of Fig. 1 has two cavities each co-operating with a mould and punch.
Patent GB-264737-A (GB)
Title: Improvements in and relating to stopping devices for electric lifts
IPC: B66B1/44
Filed: 1926-07-21
Abstract: 264,737. Mair, J. July 21, 1926. Addition to 264,714. Stopping automatically at end of run.-In stopping devices for electrically actuated lifts of the kind described in the parent Specification, the hoisting cables m are attached to levers j pivoted at k which actuate a reciprocal rod a against spring action to effect the adjustment of the ramp. One end of the rod a is linked to the ramp and the other end is pivoted to a cranked member b which is pivoted to a bracket c mounted on the top beam d of the cage. An adjustable bearing member f attached to the member b receives the pointed upper end of a pin g, the lower end of which rests in a recess in a bearing h which spans the levers j. A member l pivoted to the levers carries sheaves n around which pass the cables m.
Patent GB-611026-A (GB)
Title: Alternating current motor control systems
Filed: 1944-09-23
Abstract: 611,026. Control of A.C. motors. SMITH & SONS (ENGLAND), Ltd., S., and MEREDITH, F. W. Sept. 23, 1944, No. 18214. [Class 38 (iii)] In a motor control system in which a polyphase motor is controlled by two voltages in quadrature, one of which is a reference voltage and the other a control voltage, the motor is wound with three or more phases and the control and reference voltages are applied through a connection for converting two-phase to threephase or the number of phases for which the motor is wound. In the case in which the motor has a, three-phase stator winding, it may be supplied with the reference and control voltages through a Scott connection. The three-phase motor stator windings 1 and 2 are shown connected in star and delta since either connection may be used. Two terminals of each stator winding are connected to the secondary winding 5 of a transformer, the centre-point of which is earthed. The centre-point of the primary winding 6 of the transformer is also earthed, this winding being connected to two terminals of a three-phase generator 7 from which the reference voltage is obtained. The control voltage is obtained from the third terminal of the generator and earth, and is modulated by a detector 8 and applied to the third terminal of each motor through an amplifier 9 and a transformer 10. The detector 8 may be a device as described in Specification 611,005, [Group XXXVIII]. The three-phase motor may be hysteresis motors of the type described in Specifications 576,248 and 576,249, [both in Group XXXV].
Patent GB-945564-A (GB)
Title: Separator of the filter-bag, dust-collector type
IPC: B01D46/02
Filed: 1961-05-19
Abstract: 945,564. Ventilator tops; dust collectors. FULLER CO. May 19, 1961 [June 10, 1960], No. 18357/61. Heading F4J. [Also in Division B1] A conical cowl 26 is secured by vertical spaced bars 24 to the side 3 of a cylindrical air filter casing so as to be spaced from and shield the casing cover 4 through the raised centre of which projects the filtered air outlet duct 16 and to provide a peripheral air outlet 27 leading to atmosphere. Rainwater blown by the wind through the peripheral opening 27 and deposited on the cover 4 is drained through a peripheral opening 22 formed between the periphery of the cover 4 and a flanged ring 20 connected by straps 18 to the casing side 3 and serving to support the bars 24. Specification 936,487 is referred to.
Patent GB-457287-A (GB)
Title: Improvements in vapourizers for disinfectants, insecticides, and the like
IPC: A61L9/14
Filed: 1935-06-27
Abstract: 457,287. Vaporizers for disinfectants and like liquids. BYROM, R. D., 2, Harrod Drive, Birkdale, Lancashire. June 27, 1935, Nos. 18365/35 and 8713/36. [Class 81 (i)] A vaporizer for liquid disinfectants, insecticides, medicines or the like, comprises an open topped receptacle 1, an absorbent structure or pad 4 mounted on a disc-like cap 5, wicks 3 depending into the liquid 2, and a perforated shield or skirt 6 depending from the cap 5 and slidably engaged in or over the receptacle 1 so as to be adjustable thereon. The cap 5 carries a wooden bobbin 11 formed with transverse passages 13 for the wicks 3 and closely wound with a length of wick 14. The ends of the bobbin are provided with square sheets 15 of metal having bent corners 16 to hold the wick 14 in place. In a modification, the container 1 and skirt 6 may be connected by screw-threads. According to the first Provisional Specification a wick may be held in a tubular support in the liquid container and may be adjustable by hand so as to project more or less therefrom, or may have a perforated shield sliding in or on said support. Both wick and perforated shield may be secured to the cap of the receptacle.
Patent GB-462383-A (GB)
Title: Production of morpholine vinyl ethers and n-bis morpholinium halides
IPC: C07D295/088
Filed: 1935-06-27
Abstract: N-bis-Morpholinium halides are isolated from the reaction mixture obtained according to Specification 457,481 by reacting a b  : b <1>-dihalogenated dialkyl ether with ammonia, or are formed by treating morpholine or its homologues with b  : b <1>-dihalogenated dialkyl ethers.  In each case, the reaction is effected under alkaline conditions, for which purpose caustic alkali may be used or even an excess of ammonia or morpholine.  The morpholinium halides may be converted into the corresponding morpholine alkyl vinyl ethers by treatment with a strong alkali, preferably with heating, a morpholinium hydroxide being intermediately formed.  The examples describe (1) the interaction of b  : b <1>-dichlorodiethyl ether with ammonia in water or methanol in the molar proportions of 1 : 10 or 14 and the treatment of the mixture with caustic soda solution to form N - morpholine - 2 - ethyl - vinyl ether; cuprous chloride may be present as catalyst for the first phase; (2) the preparation of dimethylmorpholine-isopropyl-isopropenyl ether by treating the reaction product of b  : b <1>-dichloroisopropyl ether and excess of ammonia with caustic soda; (3) the reaction of b  : b <1>-dichloroisopropyl ether with morpholine in the presence of caustic soda, the isolation of dimethyl-bis-morpholinium chloride by extraction with isopropanol and its conversion into dimethylmorpholine-ethyl-vinyl ether by heating the chloride with alcoholic caustic soda.
Patent GB-385225-A (GB)
Title: Improvements in or relating to change-over keys or switches for telephone exchanges and the like
IPC: H01H21/22
Filed: 1932-06-29
Abstract: 385,225. Retractive switches switches held set and freed mechanically. RICHTER, M. B., 7, Amaliegade, Copenhagen. June 29, 1932, No. 18387. Convention date, March 10. [Class 38 (v).] In a change-over switch, more particularly for telephone exchanges having a shifting member co-acting directly, or indirectly with contact springs and capable of being swung to either side from a midposition, the shifting member is mounted to rock around one or the other of two parallel axes of rotation. The shifting member or lever e, Figs. 1 and 2, carries two parallel pivot studs movable at either end in slots k and notches l in a fixed frame a and in the midposition of the lever held at the end of the slots and notches by a spring m secured by a screw n to the frame a and acting on insulated rollers o on the studs j. A cam or groove guide prevents vertical movement of the lever and allows the lever to swing about either axis and as shown comprises a tongue p on the lever engaging in the mid-position of the lever the point of a tongue q on the frame a. Semicircular cam-pieces g on the lever are adapted to penetrate like a wedge between the bent ends h of contact springs d to close or interrupt the contacts. The end m<1> of the spring m is bent so as to engage above a roller o and maintain the lever in the left extreme position. In the right extreme position the other end of the spring returns the lever to mid-position when released. In the modification shown in Fig. 6, the lever indirectly operates the horizontally positioned contact springs d<1> by means of cams g<1>, g<2> operating sliding members r<1> maintained in position by locking plates w<1> and urged upwards by springs x<1> between the sliding members and locking plates. The plates are locked by means of apertures on fixed studs s which guide the sliding members. Rollers t<1> on the sliding, plates are pressed against the cams and maintain the operating lever e<1> in mid-position. The cam g<1> is shaped to maintain the lever in one extreme position. The lever is returned by spring action from the other extreme position when released. Insulated teeth u<1> on the sliding members engage lateral fins v to operate the contacts.. Vertical' movement is prevented by slot z and screw y. More than two cams and return springs may be used.
Patent GB-615573-A (GB)
Title: Improved method of making a glass body integral with a tubular glass member
IPC: H01J9/32
Filed: 1946-06-19
Abstract: 615,573. Glass manufacture. PHILIPS LAMPS, Ltd. June 19, 1946, No. 18440. Convention date, April 25, 1942. [Class 56] [Also in Group XXXVI] In a method of forming a glass body by sealing one or more tubular glass members into a mass of molten glass, each preformed tubular member, at least partially filled with a stable substantially non-caking powdered material, is positioned in a mould together with any other bodies to be sealed in, the mould then being filled with a mass of glass, e.g. powdered, which is melted by heating to unite with a part of the tubular member or members, the powdered material being subsequently removed. The powdered materials may be quartz, sand or refractory materials such as tungsten, molybdenum, or graphite. As shown, the bottom disc of an electric discharge tube or incandescent lamp having an exhaust tube 13 and lead-in wires or contact pins 16 is formed by positioning these parts in a bottom die 12, the exhaust tube being internally supported by sand 14; glass powder 15 is then introduced and heated under pressure from an upper die 11, the pressure being light to produce a structure having at least 5 per cent of finely distributed cavities, or heavier to produce a clear glass body. The flange of the exhaust tube 13 shown may be omitted and the tube may be accommodated in the bottom die 12, its far end in this case being closed during formation of the body. The subsequent removal of the powdered material, e.g. by tapping, is not affected by the internal shape of the tube, which may be corrugated to increase its elasticity. The method may be used to form a cover for a vacuum desiccator, or other space where gases or liquids are to be supplied and carried off.
Patent GB-708702-A (GB)
Title: Pressing device for use in the manufacture of laminated glass
IPC: B29C53/04
Filed: 1952-07-22
Abstract: 708,702. Rollers; pressing laminated glass. FORD MOTOR CO., Ltd. July 22, 1952 [Aug. 7, 1951], No. 13529/52. Classes 42 (2) and 140 A device for prelimmarily pressing together the layers of curved laminated safety glass comprises a pair of driven, co-operating. inflatable, elastomer-covered rolls 10, 11 journalled in side members 12 which are pivoted at 13 on a fixed frame 14. Both rollers 10, 11 are composed of a pneumatic casing 16 to which has been vulcanized a circumferentially-grooved tread 17. Adjustable stops 24 limit the swing of the roller assembly, which is biased by a weight 18 in a clockwise direction, so that the nip of the rolls receives easily the upturned leading edge of a curved laminated glass assembly approaching from the right. As the assembly is drawn through the nip its weight causes the roller system to swing over as shown, and the laminate is received upon a rubber roll R supported between spring-sustained arms 25 and passed to a conveyer (not shown.
Patent GB-203831-A (GB)
Title: Improvements in petrol vapour or like lamps
IPC: F23D99/00
Filed: 1922-07-06
Abstract: 203,831. Hunter, J. M. July 6, 1922. Incandescent vapour burners; burners, mounting; vaporizing-apparatus; oil supply fittings.-In a petrol vapour or like lamp in which a vaporizing- tube passes freely or slidably into a mixing-chamber, provided wit.h an air-inlet and one or more burner tubes, the mixing-chamber is supported upon the base of the lamp by one or more standards and means are provided for raising and lowering the mixing-chamber to provided access to a nipple at the upper end of the vaporizing- tube. In one form, the upper end of a vaporizing- tube 11, provided with a nipple 12 passes freely through a hole 13 in a mixing-tube 14, provided with a curved air-inlet tube 21 and a curved projecting arm 25 and communicating with a transversely disposed chamber 31 provided with two depending burner tubes 32 carrying mantles 33. The vaporizing-tube 11 and a crass-plate 9 are secured on a screw-threaded outlet member 8 connected through a valve chamber 7 to a fuel supply tube 2, provided with a wooden handle 6 and communicating with a reservoir 1, having an airinlet 4 adapted to receive the end of an air pump 5. The mixing-tube 14 is supported from the cross-plate 9 by means of two rods 26, 10, fixed to the arm 25 and the cross-plate respectively and provided with right and left handed screw-threaded inner ends, connected by a nut 30 having corresponding screw-threads so that, by turning the nut, the mixing-tube may be raised or lowered. The upper end of a tube 15 is screwed into the air-inlet tube 21 and its lower end is slidably mounted in a tube 22 secured in a hole in the cross-plate 9, an air-regulator plate 28 being pivoted on the end of the rod 10 projecting below the cross-plate 9. A dome 16 under which a lighted match may be held for starting vaporization surrounds the vaporizing-tube 11 and is provided with an integral shank 17 and base portion 18, which is secured with the cross-plate 9 on the member 8 by a nut 19. A globe or shade 35 is carried by a member 34 mounted on the top of the chamber 31.
Patent GB-719587-A (GB)
Title: Improvements in tobacco cutting machines
IPC: A24B7/14
Filed: 1952-07-23
Abstract: 719,587. Cutting tobacco. KORBER, K., and KOPER, E, [trading as KORBER & CO. KOMM.-GES., K.]. July 23, 1952 [May 12, 1952], No. 18621/52. Class 5 (1). [Also in Group II] Pieces of stalk 12 are separated from the tobacco 2, by forcibly delivering the cut tobacco from a rotary cutter head 1, obliquely on to a high speed surface such as a conveyer belt 3 or a cross grooved roller, or striker blades, or an oscillating shaker, whereby the stalk pieces rebound or rise to the top of the tobacco shreds and are skimmed off by a shelf 11. The separated shreds are delivered to another conveyer 13.
Patent GB-331086-A (GB)
Title: Improvements in or relating to handles for suit cases and the like
IPC: A45C13/26
Filed: 1929-06-17
Abstract: 331,086. Frenchs, Ltd., and Gambie, G. A. June 17, 1929. Handles.-A handle for a suit case or the like is provided with a loop at each end and the loops are passed through holes in the wall of the case. A strip of preferably rigid material is passed through the loops on the inner side of the wall and secured in position. The broad ends of metal loops 2 of stubstantially " keyhole " shape are attached to the ends of a handle of any construction, and the narrow ends of the loops pass through holes 3 in the wall of the article. A strip 5 of metal or other, preferably rigid, material is passed through the loops on the inner side of the wall and secured in position by riveting &c., and it is bowed outwardly at the points corresponding to the holes. The holes are covered on the outside by strips 6 of leather or other material, and the holes and the strip are covered on the inside by a fabric or like lining. According to the Provisional Specification, swivels may be used instead of loops.